[Speex-dev] Speex on Nokia Symbian S60 phones

[Jean-Marc Valin]

Quoting "Fabio Pietrosanti (naif)" <lists at infosecurity.ch>:
> Speex it's too cpu expensive for general S60 usage, it would require a
> lot of ASM optimization.

Did a quick search and saw ARM CPUs with speeds above 100 MHz. That should
actually be enough for Speex, at least for narrowband.

> If you are using CSD, like for a secure telephony solution
> (http://m.privategsm.com), consider that speex is VBR and VBR codecs are
> not recommended for security reasons
> (http://zfoneproject.com/faq.html#vbr) .

Except that Speex *defaults* to CBR and only uses VBR when told to do so.

   Jean-Marc

> Regards,
> Fabio Pietrosanti
>
> Jordan Dimov wrote:
> > Is speex at this stage a good codec to use for real-time voice
> > transmission over a direct CSD connection between two phones?  Does
> > anyone have any experience with using Speex on Nokia phones?
> >
> > If speex is not a good solution for this task, what would you recommend?
> > ------------------------------------------------------------------------
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